OverviewHave you ever driven an hour to a test site
only to discover that the site had little or no
load? With the Spinlab Load Box the Bird Dog Plus
can test every site, even if there is no load or a
very light load.

In-service testing is the only way to
thoroughly test a meter circuit site. If
there is no load or a very light load, a
proper ratio/burden test cannot be
performed. Now with the Load Box, you
can load a CT enough to completely test
the meter circuit. simply take the
current cable from the Load Box, wrap it
around the CT, switch from 10 amps to 50
amps through the CT, and perform a meter
circuit test the same way as usual. The
Spinlab Load Box is usable with 120V,
240V, or 480V service and is good on
donut or bar-type CTs.

Some additional
applications for Load Box are:

Checking CTs on the bench before
hooking them up in a circuit.

Testing a new installation
before a load is applied , saving a
later trip back
to the site.

Performing a meter verification
test using the Bird Dog Plus on
no load sites.

Specifications

Input Voltage

120 volts, 240 volts, 480
volts AC

Measurement

Switch
Position

Current

%

Output Current Note1

all switches Off

10 Amps

0% to 5%

1 switch On

20 Amps

0% to 5%

2 switch On

30 Amps

0% to 5%

3 switch On

40 Amps

0% to 5%

4 switch On

50 Amps

0% to 5%

Output Current Note2

40 foot

40 Amps

0% to 5%

70 foot

30 Amps

0% to 5%

100 foot

20 Amps

0% to 5%

Note 1:

These readings are
dependent upon a 12 foot
cable length

Note 2:

These readings are for
longer cable lengths
(current ratings shown are
maximum)